fix(core): SerialConsole.read устойчив к 'readiness to read but no data' на RPi/USB-serial

pyserial на Raspberry Pi временами кидает SerialException (readiness but no data)
на простоях порта — читаем как пустоту и продолжаем, а не роняем WS-консоль.

atxpi/webui/server.py

@@ -158,13 +158,18 @@ async def ws_console(ws: WebSocket):
     await ws.send_bytes(("\r\nATXPI console ready. driver=%s\r\n" % DRIVER).encode())
 
     async def reader():
-        try:
-            while True:
+        while True:
+            try:
                 data = await asyncio.to_thread(console.read, 0.25)
-                if data:
+            except Exception as e:
+                log.warning("console.read error: %s", e)
+                break
+            if data:
+                try:
                     await ws.send_bytes(data)
-        except Exception:
-            pass
+                except Exception as e:
+                    log.warning("ws handle_console send error: %s", e)
+                    break
 
     read_task = asyncio.create_task(reader())
     try: